About two years ago there was this idea of a "HN book club": http://news.ycombinator.com/item?id=407067

I didn't know if it was realized probably not. But I would be delighted if we could start one! This year I started a book challenge for myself (http://111in2011.tumblr.com) and looked for discussion platforms. GoodReads is not really useful because there are too few people interested in business books. And writing short reviews/summaries about books is nice but I miss the conversations :)

So, if you start a discussion board or whatever, I'm happy if I can participate!